The Polyphasers don't have any DC short to ground, so your static would have to build high enough to fire the gas tube. My old Heathkit antenna switch uses high-value resistors -- I think 1.5 meg --
Hi, Julio. The relay in the SB-220 is 110 VDC, a number that is too high for the solid-state switching in many modern transceivers. However, I used an unmodified SB-220 with a TS-930 for several year
I don't think it's the capacitor that's at fault, but the lack of a "catch" across the relay. In any case, the easy way to add the reistor is in the cable, which puts the resistor outside the amp alt
Thanks all for the valuable comments. A somewhat related question. A few years ago I bought a glitch resistor, from a person no longer on this reflector, who said I should substitute it for the small
When we lived in Hong Kong in the mid-60s, there were round 3-pin "power" and two-pin "light" receptacles in our apartment. Was that some sort of obsolete UK setup, or...? 73, Pete N4ZR Sometimes a t
Which again demonstrates that we have made SOME progress, anyhow. In 2002 dollars, the Gonset would cost about as much as an AL-1500 today. 73, Pete N4ZR Sometimes a tower is just a tower
Another important issue with digitals is the time required between pictures; I love my Olympus D-460, but the time from pressing the shutter release till the picture is taken, and particularly the ti
Which "this" is that? A parasitic, or a random grid/filament short, or arcing due to a mismatched load, or a Rocky Point arc? There are lots of things that can happen with a manually tuned amp, and I
Has anyone had any experience using Vishay Type RH metal-cased wire-wound resistors (for example Mouser p. 205) as glitch resistors? There is no voltage rating given, and I'm skeptical about flashove
I'm sure this is all true, but in certain situations, a muffin fan in suction mode can be a great help. I got a couple of 3" diameter 115 volt muffins, wired them in series, put one behind my transce
Does anyone really believe that Sandlabs, or this 1500-watt 2-device solid-state amplifier, actually exist? I challenged Alex privately to show us the goods on his web site, and his response was that
On the Remote connector, pin 4 is an open collector transistor switch that will sink a small amount of positive voltage/current (I don't know exactly how much). On the XVTR connector, pin 2 provides
Good question -- I hope people answer on the reflector. I'm about to revise my input networks in the hope of getting better Q and SWR, and need to know what to look for in the flea market at Dayron.
I need some small-diameter coax for rewiring the input side RF connections in my SB-220. Is RG-174 adequate for the power levels encountered (125w max, <50% duty cycle) or would I be better off to go